[CentOS] Command line tool to test bandwidth between 2 servers

Wed Feb 6 23:33:21 UTC 2008
Dan Carl <danc at bluestarshows.com>

What's the best way to do this?

Daily, jpg images are added to an inhouse server.
Everynight I want to backup these images to a server offsite, via rsync.
What I want is to determine what to set the bwlimit to.
I also want to estimate how many MB's of images I can move nightly.
Thanks 
Dan